Mentha

A long history of cultivation of various taxa, including hybrids, has resulted in a shifting in application of names in this genus. Some hybrids are well established outside of cultivation, efficiently spreading vegetatively, and are here mapped and treated in full.

1. Flowers in axils of ordinary leaves (these, like the internodes, only gradually reduced upwards on the stem).

2. Uppermost bracteal leaves small but still ± leaf like, with a short petiole, and exceeding the flowers.